Karn, Silver Golem [Arena League 1999] OTS Tournament Pack 4 or "Duoterion" in your GY

or "Duoterion" in your GY

Set: Dark Revelation Volume 3 Card type: Effect Monster Rarity: Rare Attack: 2300 Defense: 900 If this card was Special Summoned by the effect of "Ultimate Insect LV3"

the Virtuous" once per turn

Set: Platinum: Base Set Type: Trainer Rarity: Promo

Karn, Silver Golem [Arena League 1999] OTS Tournament Pack 4 or "Duoterion" in your GYSet: Arena League 1999 Type: Legendary Artifact Creature Golem Rarity: Rare Cost: {5} Whenever Karn, Silver Golem blocks or becomes blocked, it gets 4 +4 until end of turn. {1}: Target noncreature artifact becomes an artifact creature with power and toughness each equal to its converted mana cost until end of turn.